A photochronograph, also known as a chronophotograph, is a camera device that captures sequential images to record motion or events at high speeds. Other common synonyms for photochronograph include time-lapse camera, time lapse recorder, and high-speed camera. A time-lapse camera is used to capture a sequence of images at a slower pace to show changes in events over time. A time-lapse recorder is used to record the passage of time over a long period. A high-speed camera, on the other hand, is used to capture rapid movements such as athletes in action or explosions. These terms are often used interchangeably depending on the context or application.